Printing-telegraph



(No Model.)

H. VAN HOEVBNBERGH.

PRINTING TELEGRAPH.

Patented Feb. 5, 1884.

WITNESSES UNITED STATES P TENT HEXRY VAX HOEYENBERGH, OF ELIZABE'II,XEYV JERSEY.

PRINTING-TELEGRAPH.

SEECIFICATION forming part of Letters Patent No. 292,966, dated February5, 1884,

Application filed April 30, 1883. (No model.)

To aZZ whom it may concern Be it known that I, HENRY VAN Honvnx- BERGII,a citizen of the United States and a resident of Elizabeth, in thecounty of Union and State of New Jersey, have invented certain new anduseful Improvements in Printing-Telegraphs, of which the following is aspecification.

My invention relates to certain improvements in the construction andorganization of apparatus and circuits for printing-telegraphs; and itespecially pertains to the construction of transmitting devices formultiple-wire instruments.

The object of my invention is to provide means for neutralizing theeffects of the'socalled static currents, which occur at the cessation ofthe electric impulses employed for actuating the receivirig-instrumentsto effect a more reliable operation of the impression-lever and toobtain a more rapid movement of the type-wheel. To effect this result,the polarity of each succeeding current or impluse which is transmittedto the receiving-instrument is reversed with reference to the precedingimpulse traversing the same conductor.

The invention consists in combining with a rotating armature and aseries of eleetro-magnets, respectively, included in a series oflineconductors, a transmitting device organized to alternately connectthe respective poles of a battery with the corresponding terminals ofthe line-conductors in succession.

In carrying out my invention I prefer to employ a revolving pole-changerof any suitable construction, arranged to alternately eonnect thepositive and negative poles of the transmitting-battery with the earth,and to simultaneously connect the pole which is not in connection withthe earth with three contactarms bearing upon the periphery of arevolving polygonal cam. This cam is revolved by the movement of thepole-changer, and its projecting angles force the cont-actarms outwardlyin succession, thereby causing each of them in turn to impinge againstacorresponding one of three contact-springs. These c011- tact-springs arerespectively connected with three line-conductors extending to thereceiving-station. An electro-magnet is included in each of theline-conductors at the receivingstat-ion, and these electro-niaguets,being sue cessively vit-alized by the impulses caused to traverse thelineconductors, serve to revolve an armature in one direction or theother, according to the order of succession in which the electro-magnetsare vitalized.

The accompanying drawing is a diagram illustrating an organization ofapparatus and circuits embodying my invention.

Referring to the figure, A and I respectively represent a transmittingand a receiving station of a printing-telegraph system, and L L Lrepresent three line-conductors uuiting the same.

At the transmittingstation is located abattery, E, and a pole-changingdevice, C. The pole-changer 0 consists of two contact-wheels mountedside by side upon an arbor, G". The peripheries of each of the wheelsare divided into insulated conducting-segments. The at tcrnate contactsegments of one wheel are united with each other, and by a conductor,1,with the positive pole of the battery E. The remaining contactsegmentsof the wheel are likewise electrically connected with each other andwith a conductor, 2, leading to the nega tive pole of the battery E. Thealternate eonduct-ing-segn1ents of the other wheel are likewiseconnected, through the conductors l and 2, with the positive andnegative poles,respectively, of the battery E. Two contact-brushes, Fand F respectively, rest against the pe ripheries of the two wheels, andthey are so adjusted that,while the brush 1" is electrically connectedwith the negative pole of the batteryE, the brush 1* will be likewiseconnected with the positive pole, and vice versz Thus by the revolutionof the pole-changing device 0 the brushes F and F will be alternatelyconnected with the positive and negative poles of the battery. The brushF is connected by a conductor, 3, with the earth at G and the brush F byconductor 4 with three contactarms, 71, 713 and if. A polygonal cam, H,is mechanically united with the arbor D and revolved thereby through twosuitable gearwheels, I and t. Against the periphery of this cam thethree contact-arms 7L are caused to impinge.

In the drawing I have shown the polygonal cam H as having five sides, Itis so organ- LII IOC

ized with reference to the pole-changer C that for each reversal of thebattery E, occasioned by the movement of the pole-changer,the team willcomplete one-fifteenth of a complete revolution. The contact-arms h areso arranged relatively to the periphery of the cam H that only one ofthe same will impinge against a projecting angle of the cam at atime,and that they will be forced outward in succession by passing oversuch an angle. The organization is further so adjusted that one of thearms it will be thus forced outward by one of the angles of the cam ateach reversal of the poles of the battery E with reference to the brushF. Three contact-springs, P, F, and P respectively, extend into suchproximity to the arms h, h", and if that when either arm is forcedoutward by an angle of the cam H passing beneath its extremity,a point,0, carried thereon i will impinge against the corresponding spring, P,thereby completing a circuit from the brush F 120 that particularcontactspring. tact-springs P, P, and P are respectively electricallyconnected with the three line-conductors L, L, and L It willbe seen thusthat if the pole-changer C be revolved by means of the crankN or othersuitable device, the positive pole of the battery E will first beconnected, through wire 2, brush F, and conductor 3, with the earth atG. The negative pole will be simultaneously connected,through theconductor 1, brush F conductor 4, and one of the contactarms h-forexample, hwith the corresponding contact-spring P, and thus with thelineconductor L. The further movement of the pole-changer C will causethe negative pole of the battery E to be connected through the conductor1, brush F, and conductor 3 with the earth at G, and the positive polebe connected with the wire 2, brush F", conductor 4, and the succeedingarm h with the corresponding contact-spring, I, and conductor L-. Thefurther movement of the pole-changer C will establish similar electricalconnections from the positive pole of the battery E to the earth at G,and from the negative pole to the conductor L. The continued rotation ofthe polechanger will cause these connections to be repeated, with theexception that the polarity of each current or impulse transmittedthrough any conductor will be opposite to that of the preceding impulsetransmitted through the same conductor. The successive positive andnegative impulses thus transmited through the several conductors act toneutralize the static currents which succeed each interruption of thecurrent traversing that conductor, in a manner well understood. At thereceiving-station the impulses thus transmitted are employed foractuating a type wheel, T, through the agency of an armature, B. Thisarmature consists of a disk, D, carried upon an arbor, R, and providedwith a series of equidistant radial projections, 0*, a", and 0 &c.Adjacent to these projections are three electro-magnets, M, M, and M",respectively The conincluded in the circuits of the conductors L, L, andL The electro-magnets M will be successively vitalized by the currentscaused to traverse the conductors L, and act to rotate the armature R inone direction or the other, according as they are successivelyvitalizedin the order M M M or M 3PM. This is accomplished by arrangingthe projections 1- with reference to the poles of the electro-magnets Min such manner that at the moment any one proj ection-r, forexample-confronts the pole of the magnet M, another projection-1 forexample-is withinthe field of force of the succeeding electro-magnet,M", but not at its nearest point of approach to that pole. If,therefore, the electro-magnet M be demagnetized and the electro-magnet Mvitalized, the armature R will be revolved in the direction indicated bythe arrow 00, and a projection, 7", will be brought into the samerelation with reference to the magnet M, as first described withreference to the projection r and electro -magnet M A succeeding impulsetransmitted through the electro-magnet M will further advance thearmature It in the direction indicated by the arrow at, and the sameoperation will be repeated by the succeeding impulses. The movement ofthe armature-R in the opposite direction is occasioned in precisely thesame manner when the electro-magnets are vitalized in the reverse order.

For the purpose of effecting an impression, when the type-wheel has beencaused by the revolution of the armature R to bring a required type intoposition, I employ an electromagnet, N, having three coils, n, if, and arespectively included in the circuit of conductors L L L. So long as theimpulses transmitted over the conductors L are of alternating polarity,the armature N of this electro-magnet, which may be employed in anysuitable manner for effecting the impression of the type, will not beactuated, owing to the magnetic inertia of its core. If, however, anyone of the impulses caused to traverse any of the conductors L beprolonged, it will act to induce in the core of the electro-magnet Nsufiicient magnetism to actuate the armature and effect the impression.Thus, if the pole changing or transmitting wheel 0 be rotated until therequired number of impulses have been transmitted for bringing anyrequired type into position, the electro-magnet N will be vitalized byarresting the movement, and an impression will then be effected.

Any of the well-known devices applicable thereto may be. employed forenabling the transmitting-operator to determine the position of thetype-wheel, and for maintaining a unison in thepositions of thetransmitting and receiving devices.

I claim as my invention- 1. The combination, substantially ashereinbefore set forth, of a battery, a motor-armature, a series ofelectro-magnets for actuating said armature, a series of electricconductors respectivelyincluding the coils of said electromagnets, andmeans, substantially such as described, for transmitting electriccurrents from said battery upon each of the conductors in succession,and for reversing the polarity of each succeeding current thustransmitted.

2. The combination, substantially as hereinbefore set forth, of abattery, a series of electro-magnets, aseries of electric conductors inwhich the coils of said electro-magnets are respectively included, andmeans, substantiallysuch as described,fortransmittingelectric impulsesfrom said battery upon each of the said conductors in succession, andfor causing the impulses transmit-ted upon each conductor to be of theopposite polarity or direction from that of the preceding impulsetransmitted upon the same conductor.

3. The combination, substantially as hereinbel'ore set forth, of abattery, a series of lineconduetors, means for transmitting electricimpulses of alternate positive and negative polarity upon saidconductors in recurring succession, an electro-magnet constructed with aseries of independent coils, which coils are respectivelyincluded in thecircuits of sai d line conductors, and an armature applied to saidelectro-magnet, and responding only to a pro longed impulse transmittedthrough one or more of said coils.

l. The combination, substantially as herein before set forth, of abattery, a pole-changing device, a series of electric conductors, aseries of circuit-closers respectively applied thereto, and means,substantially such as described, operated by the movement of saidpole-changing device to actuate one of said circuit-010s ing devices ateach reversal of said battery through the action of said pole-changingdevice.

5. The combination, substantially as hereinbefore set forth, of arevolving pole-changer, a revolving polygonal cam mechanically connectedtherewith, a series of contact-springs, and a series of contactarmssuccessively caused to impinge each against one of said contactspringsby the action of said cam.

U. The combination, substantially as hereinbefore set forth, of arevolving pole-changer, a polygonal cam, three contact-arms respectively impinging upon the peripheries of said cam, and three contact-springs,against which said contact-arms are successively caused to impinge bythe action of said cam.

In testimony whereof I have hereunto subscribed my name this 25th day ofApril, A. D. 1888.

HENRY YAX HOEVEXBERGH.

lVi tnesses:

DAXIEL XV. Enonconr, CHARLES A. TERRY.

